Proceedings of the Korean Institute of Industrial Safety Conference (한국산업안전학회:학술대회논문집)
- 1999.06a
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- Pages.201-206
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- 1999
플라즈마 절단 후 제작된 용접부의 기계적 특성
Abstract
The influence of surface preparation methods after plasma cutting on the quality of welding zone is investigated. For comparison. three types of welded specimens are prepared by machining(YM), plasma cutting with light regrinding(WPG) and without regrinding(WP), by using three kinds of materials, carbon steel(S45C), stainless steel(Type304) and aluminum alloy (6061-T6). Nondestructive examination, hardness test, microstructure examination, and fracture toughness test are performed. The results show that there is no appreciable reduction in hardness or fracture toughness in WP specimens. But a little difference in heat affected gone size is observed.
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